Level of difficulty between some of these math classes

Intermediate algebra and algebra 1 are both 5 units and then college algebra is only 3 units, so is college algebra easier then since it is only 3 units ?

(At a 2 year college)?

going from algebra 1 to algebra 2 (Is there much difference in the level of difficulty between the two?)

or going from algebra 1 to college algebra ? (Again, is there much difference in the level of difficulty between the two?)

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