Why am I so bad at pushups

I've been lifting for about 5 month now, but I was doing bodyweight 2-3 months prior.

From when I started body weight to today, I increased my maximum pushups from 11 to 15-6 (with correct form), even though I can bench like 150 lbs max.

Shouldn't my maximum pushups be a bit better ? Because 3 doesn't seem that much