Comparing both players:
Bungle5Voting record: No Vote, nothing, nothing, Shyguy (Townie), Xander (Mafia), nothing, Shyguy (Mafia Recruit).
Notable votes: Day 1 the first No Vote. Day 4 they vote Shyguy, who later gets recruited. Day 5 opens the bandwagon on Mafia Xander.
MASBVoting record: Pokepal (killer), nothing, nothing, Luigi Dude,
Luigi Dude Xander (Mafia), nothing, nothing.
Notable votes: Day 1 he joins Mafia Xander's vote against Pokepal. Day 4 he pushes Luigi Dude tied with No Vote. Day 5 he pushes Mafia Xander tied with No Vote. Did not join the Shyguy bandwagon on Day 7 unlike Bungle5.
I don't see a smoking gun on either player. The fact both were instrumental in pushing Xander out is notable, as without them it would likely not have happened. Neither really capitalized on the success either to install themselves as Townie Alliance leaders.
On balance I think MASB has a slightly worse voting record, setting up ties to overrule the No Vote, but he has never No Voted this game so might just not like them as they stall the game. Bungle5 has voted against just two players and both were Mafia (eventually).
I was massively wrong on MASB last time, so I'd like not to be wrong twice in a row. Willing to change my vote based on a convincing argument. To add pressure though,
Vote MASBSince Xander has been inactive for most of the game, it's possible that both Bungle and MASB bandwagoned their own team mate to build clout.
Possible yes, but they didn't all bandwagon.
Day 5: Bungle5 starts the vote on Xander, is followed by Wah, and then MASB changes their vote from Luigi Dude to Xander as well. (MASB had voted along with Wah the previous day too).