seems like Nia's current wincon is relying on her summons to take out VTSG while she peaces out to another planet. In particular the argument is supposed to be that this one big summon is setting up for what's supposed to be a big electricity attack while a bunch of smaller fodder summons distract (I'm not convinced that this will actually win the fight because of stat equalization, but if we're supposed to agree that the forcefields are literally impossible to get through by a particular interpretation of the rules of the tourney then theres literally nothing anyone can do) the electricity attack is supposed to stun VTSG and all of its summons long enough to be fully taken out.
VTSG's wincons is involving taking out Nia's summons since they can't reach Nia until she comes back to the battlefield. The biggest argument for this right now is that the plasma balls from VTSG and beams from the avatar summons should have enough energy output to quickly overload the forcefields and take them out to then promptly fly over the resulting explosions that happen when Nia's summons die. However since it's really just a matter of surviving until Nia comes back to the battlefield so VTSG can overwhelm her with rapidfire vaporizing sun beams, other viable options involve freezing Nia's summons with ice manipulation, slowing them with glue, and (probably most useful) indefinitely knocking them away as they approach with the multiple methods of knockback that VTSG has such as its main attack which has knockback by default, a forcefield which has an even stronger knockback if anything approaches VTSG too close, and summoning tornadoes (note that all of these stalling methods are completely unnecessary if VTSG and its summons can in fact overwhelm the Mugann forcefields, which I'm still arguing that they should)