I'll repeat myself one more time. NXT stars are nowhere near God Tier. God Tiers are like Randy Orton, John Cena, Brock Lesnar, Kurt Angle, and much more. You're telling me that they compare? Hell no. This, at best, proves that they're Top Tier. God Tier, though? Absolutely not. Also, Adam Cole did not defeat Seth Rollins. The match ended by disqualification. Finn Balor literally got distracted by Johnny Gargano, which led to Adam Cole low blowing Balor, which gave him. How is this a clean victory? Plus, base Finn Balor is High Tier at best. Him beating Daniel Bryan is the only time he's beaten someone in Top Tier clean. But he has to low blow a High Tier wrestler in order to get a win. It's shown to be much more consistent that Adam Cole is around High Tier, but definitely on the upper end of it.
Also, just because someone can damage someone else, doesn't automatically mean that they're on that level. The High Tiers in WWE have shown many times to put up great fights against the Top Tiers, only to come up short. The Miz is a prime example of this. Miz is clearly a High Tier leveled wrestler, but the only way he has defeated Top, or even occasionally God Tiers is with outside help and/or cheating.
At the very, the WWE NXT wrestlers are Top Tier, but they are on the lower ends of it.