Origin refunding Mass Effect 3 purchases

[M.U.G.E.N]

chapset said:
-first the ending doesn't make sense
-second the choice you made trough the trilogy are discarded with 3 very similar ending you get a red,blue or green colored ending
-third you get no closure for your companions and your lover if you did pursue a love story in the game
-fourth a new major unexplained antagonist is introduce in the last 5 minute of the game, imagine playing the halo serie fighting against the convenants and in the last minute of halo 3 some random guy wearing black appear and tell you 'mouhahahaha am the real bad guy' then you get the end credits, you probably would get pissed.
I don't agree with the refunds but I get why the fans are mad

those points sound pretty bad. So how does this game keep getting such high review scores? Is it the Multiplayer? I tried the demo/beta but really did not enjoy it. The MP felt rather slow and boring to me personally