A bigger file just means bigger sounds and graphics. It's hardly a measure of effort. You could spend months working on stages for a puzzle game and still have the whole thing come out at 600kb.
Then more fool them. Don't they know that today's generation wants BIGGER and BETTER? Why play something that fits on a floppy when it can come on THREE DVDs?
I don't download anything over 5 mb, unless it's sommat that has had rave reviews and such.
Size is no indication of how good a game is. I once made a game which was 1.5 MB, then I realised I could cut bits out and generally optimize it, and the new version of it was 500KB, and it was much better and faster to run.