I've only played the multiplayer once so far (too busy playing the multiplayer on Super Street Fighter II Turbo HD Remix) but last I checked I didn't experience any lag and I was able to check my win/loss record which is 3/2. At the end of each fight it offers both competitors to fight again or to leave. Now in SSFIITHDR, I've have experienced some lag and quite a few people quit on me but I still got the win and they get a drop on the leaderboards.