To be fair there's not a whole lot of difference. No top gear and the 22 for a steep hill and that's about it.

Mathematically perfect, yet perfectly meaningless.

Close but not perfect, since we have an order of operations ambiguity with the serial division. 28/38/48 could be 35.4 if you go right to left instead of left to right. Just to add some more nerdy babble.

Something Mathematically Meaningful.

28/38/48 crankset provides a 26.0 - 89.2 gear inch range.
22/32/42 crankset provides a 20.4 - 78.0 gear inch range.

Bottom line is the 28/38/48 crankset is better for recreational riders with a tailwind, or going down hill.
Good on flat paved roads with no wind, And good for most hills.

While the 22/32/42 will be better for steep gravel hills, Still provide good speed for flat paved roads on a windless day, But will not be as capable to take advantage of a tailwind, or when going down hill.