I always say to take Martin's info as incredibly reliable but his opinions - especially on Epcot attractions - with a grain of salt. As Mad Dog said, everything is personal preference, but more specifically, Martin LOVED old Epcot and isn't much of a coaster fan either. GotG is a huge kick in the gut to him as far as he's concerned. I'm sure it'll be fun, although I do think they should've been more aggressive and tried to push for the best possible indoor coaster.
As for SWL, from what i've heard and is being said, we have nothing to worry about with those rides. Especially those rides being worse than Rat (for the record, I think Rat will be a perfectly fine addition, it's just nothing more than that).