Originally Posted by
k2thej
Wish G1:
-Guarantees you won't have Emrakul in hand
-Gives you 3 more chances at regal force
-3 Chances at Cradle instead of 1
-Masticore to kill Peacekeeper, Blazing Archon, any other creatures that may stop/kill you
-Shaman to take out any artifacts
-3 more chances at a lord (warcaller)
-Terrastodon to take out any other permanents that could stop you (Tabernacle, Moat, glacial chasm, Humility, etc)
***and, above all, guaranteeing that you get the exact one of these that you need and NO others, no other tutor can do this because they require the cards to be in the deck***
To your point about having multiples in hand, Summoner's pact IS an elf, so that's irrelevant.
Also, again, my biggest gripe with GSZ is that it is summoner's pact for one more mana, and it doesn't matter if you can afford it on turn two, because the biggest obstacle to overcome with turn 2 combos (and comboing in general) is continuing to draw elves, not worrying about mana, and it does not help with this at all. Actually, it hurts it, since it is a card that if you draw mid combo it does not let you draw another card. With regards to card advantage, drawing GSZ mid combo is the same thing as drawing a land (unless you use it to get visionary or symbiote, or can afford regal force, but in all these cases summoners pact would still be better). In combo, there is no advantage whatsoever to running GSZ over pact.
EDIT: after posting this I realized you were arguing for GSZ vs. Wish not pact. My mistake.
I still say with is better for the reasons listed above. You can't compare the mana cost of the two cards because they do two completely different things. One allows you to save maindeck space, which is the biggest advantage for me that I see in wish. The other is a MD tutor, another (worse) pact. Have you tested the wish build? I really think you'll like it...