"Nvidia doesn't exist" They don't exist in the iGPU market, unless you count the Nintendo Switch. The Switch doesn't run the same games that Meteor Lake and Phoenix do, and therefore I don't think it's an interesting comparison. But I do have data at https://chipsandcheese.com/2023/12/23/nintendo-switchs-igpu-... if you want to factor in Nvidia. Same with Nvidia's discrete cards or AMD's desktop RDNA 3 variant (with the larger 192 KB vector register file). Neither of those can fit in the same form factors and power envelopes that Meteor Lake and Phoenix compete in.
What Intel source marketing/press release stuff did you take issue with? I'll be honest, I didn't go over their Meteor Lake marketing/press release materials in detail. But if they did claim something crazy and didn't deliver, I can understand the disappointment.