Yea the online matches are way to short! You got the time for 1 good assault and the second one needs to be rushed if you fail the first one
Tip of the day:
A big mistake a lot of you make is that wiiware games will be free.
Wiiware is just the same like the virtual console. Its different in that it offers new games instead of old console games.
I can think of some easy games ( Like tetris and some other in that direction ) that can be free but the majority will cost money.