lol
i probably had every PS2 Gundam game Bandai put out....
the GOAT was Rise From the Ashes on the Dreamcast...
i touched the Blue Destiny Sega Genesis ones ROMs also
IMO there is no objectively "great" Gundam game, just some that work well for their era...
if you are a big MSG fan you will usually find each one serviceable on some level.
Federation Vs. Zeon
Encounters in Space
Zeonic Front
^^ were the heavy hitters on PS2.
MSG works best as a tactical game...the new one in the OP is prob. the best one since Rise from the Ashes. U can exit the mobile suit and capture bases and it has all the suits from MSV and books/side stories. not a lot of single player content but then again it is free.
you can paint and customize the weapons of the suits...
shyt has Galbaldy's and Gelgoog Cannons as playable suits
G3 Gundam, KAMPFER, NT1-Alex, etc etc
they adding the Zeta suits now. they just put Hyaku Shiki and RX-178 MARK 2 in there. it's going to be a fool when they actually add ZETA and Double Zeta Gundam though.