I mean, I didn't really include them as they both have what? Less than 20 appearances total?
I'm not really trying to make a Liverpool to Arsenal comparison. I was just responding to the absurdness of the statement that Arsenal have the best prospects in the world. They don't.
I also don't feel Liverpool are really trying to blood and bring in youth players. I don't think they're in a stage where youth is going to be at the forefront of what they're trying to do. Trent got in at the right time, made the spot his, and they've moved forward. But everyone else, probably missed the chance. Klopp says the right things about Brewster, Jones and others, but that's more Pep saying Phil Foden being unsellable than anything else. He can't come out and say, "Sorry youth players, you're not getting into the side". He can't say, "Well, we won the CL, so I think there's zippy chance any of you sniff our starting 11", and keep players around or coming into the academy. Sure, I think they're happy to have kids like Brewster, Jones, Hoever and others. I think they're hopeful that one or two might eventually make it to the first team. But I don't think they plan, expect or really care if they don't. They're setup to do their best to win as many football matches over the next 2 or 3 year periods, and then recharge with some new players. But the reality is, Klopp and Edwards are going to want to go get players who can keep that machine humming more so than restarting.
If anything, Arsenal, who are not anywhere close to winning the EPL or even making hay in the CL, should be in a phase where your TAA comes through. I don't think their academy has a player who is rationally going to play a ton of matches for Arsenal if they did get better and try and reach a portion of where Liverpool is now. Maybe I'm wrong, but I think we'd see more signs of that player showing it for what's a pretty meh Arsenal football team.