The F-16 can’t carry as much ordinance as the F-15, I think. The F-15 is a BIG bird.
Very true. The F-15 and the F-16 use the same engine, either the Pratt & Whitney F100 or the GE F110.
But the F-16 only has one engine, where the F-15 has two. So the F-15 has roughly twice the thrust of the F-16.