Note to the always intelligent (sarcasm) Major Nelson readers/Xbox Live users. Metal Slug 3 should not be 400 points because it's "retro." The damn thing came out in 2001 and probably has more frames of animation than some 3-D titles. It's not retro because it's 2-D, and it could not have been done on the SNES. The slowdown isn't there because of "frame rate issues" or because the coding is sloppy. It's always been there and makes the freakin' game possible.
Read some of the other whiney, hilariously uneducated thoughts on this 100+ comment piece.