If nothing else, I'm amused at how Shingen further highlights how crippled Metatron will be for another half a year.
Provisional Forest maxes out at +200% to the burst multiplier. The current cap is +300%. Metatron's entire purpose in life can thus only add another +100% to that... which is equivalent to 1x normal hit in damage.
Michael of course blows away Metatron here by ensuring Shingen's burst and thus also the difference between 4-person and 5-person burst streak (ie going from 33% to 50%). But we already agree on that.
I tend to think that Raphael's orb removal and rage gauge reduction still offers more than current-Metatron in a burst build though... :P