Having used both Love2D and Pygame, Love2D is far and away more capable than Pygame used to be, because it can actually use GPU acceleration, and because Lua's features (like coroutines) make for a far more expressive way to write games.

Which isn't to say that people can't use Pygame to good effect, but that you're working uphill with it a lot more.

Looking at other comments here, though, it sounds like newer versions of pygame stepped up significantly in terms of what can be done. Kudos!