It's the same calculation between ta.ema and the NT EMA. In NinjaTrader, if you don't set your calculation to OnPriceChange, the current bar is probably different. I just tested and I get all the same results for historical bars between the two (I only have realtime on NT and not TradingView).
Anyone have the original files that they would share for t-rex, sumo pullback, solar wind rk, rev out scalping, zone gpt, or any of the other entry style indicators?