Why are we telling you this? Let's illustrate with an example. We have three engines:
engine-------max torque@rpm-----------power@max torque
----A---------400 lb.ft@3000rpm------------------228 hp
----B---------200 lb.ft@3000rpm------------------114 hp
----C---------300 lb.ft@5000rpm------------------285 hp
Just for fun, let's say that all of these engines have the same maximum power, no matter what it is, no matter at what rpm. Which engine will give the highest acceleration at wheel rpm of 500, 1000 and 2000 rpm? Let's do the calculations:
engine-------gear ratio-------engine rpm--------wheel rpm-----------wheel torque
---A---------------6:1---------------3000---------------500-----------------2400 lb.ft
---B---------------6:1---------------3000---------------500-----------------1200 lb.ft
---C-------------10:1---------------5000---------------500-----------------
3000 lb.ft
---A--------------3:1---------------3000--------------1000-----------------1200 lb.ft
---B--------------3:1---------------3000--------------1000------------------600 lb.ft
---C--------------5:1---------------5000--------------1000-----------------
1500 lb.ft
---A-----------1.5:1---------------3000--------------2000------------------600 lb.ft
---B-----------1.5:1---------------3000--------------2000------------------300 lb.ft
---C-----------2.5:1---------------5000--------------2000------------------
750 lb.ft
With appropriate gearing, the winner is always engine C, even though it doesn't produce the maximum torque. With engine A & B, it is clearly the one with the highest torque that gives the highest output torque, but this theory doesn't hold up with engine C. But if you compare the power they produce at maximum torque, then you can see a direct relation with their maximum output torque.
Again, nobody will argue with you on that point. But this relates with the power curve shape. If you already read
the previous link I presented to you earlier about rpm range, you should understand. Let's look at an example again. Let's use engines A and C again. Let's add these extra data:
engine-------rpm--------torque@rpm--------power@rpm
----A---------3000--------400 lb.ft---------------228 hp
-------->max torque
----A---------4000--------374 lb.ft---------------285 hp
----A---------5000--------315 lb.ft---------------300 hp
-------->max power
----A---------6000--------254 lb.ft---------------290 hp
-------->max rpm
----C---------5000--------300 lb.ft---------------285 hp
-------->max torque
----C---------8500--------185 lb.ft---------------300 hp
-------->max power
----C--------10000-------152 lb.ft---------------290 hp
-------->max rpm
Now they both have the same maximum power and engine A can produce 285 hp just like engine C can. And if we choose an appropriate gearing for engine A, it can produce the same wheel torque as engine C at maximum torque:
engine-------gear ratio-------engine rpm-------wheel rpm-----------wheel torque----------max wheel rpm
---A---------------8:1---------------4000---------------500-----------------3000 lb.ft-----------------750
---C-------------10:1---------------5000---------------500-----------------3000 lb.ft-----------------1000
---A--------------4:1---------------4000--------------1000-----------------1500 lb.ft-----------------1500
---C--------------5:1---------------5000--------------1000-----------------1500 lb.ft-----------------2000
---A-----------2.0:1---------------4000--------------2000------------------750 lb.ft------------------3000
---C-----------2.5:1---------------5000--------------2000------------------750 lb.ft------------------4000
Now we can see that they both produce the same wheel torque just like in your example. But now you can also see that the maximum wheel rpm that can be attained with their respective gear ratio is higher for engine C than engine A. What does that mean? It means that you will need an extra gear to cover the full rpm range you need with engine A. The wheel power (not torque) will look a lot like this (I took the figure from the link about the
power curves comparison, so the numbers don't match with my example):
The blue line would be engine A and you can see the shift point. What you will find is that the average power available at the wheel will be lower with engine A than with engine C. Why? Because engine A doesn't have as much power in the lower rpm range than engine C does.
In my example, engine C is a high-revving engine with a strong lower power band and engine A is a low-revving engine with a weaker lower power band. In real life, by design constraints, it is usually the other way around. But it is technically possible to build two such engines.