Wijnaldum was like Llorente yesterday, did his job and did it well, but he just lacks quality. Salah was and Mane were both great tonight, but between the two of them they had like 3 shots. 2 big chances, mind, but still. Most of liverpool's dangerous attacks were set up by Salah and Mane, but it was Milner or Wijnaldum at the end of those, and well, they're Milner and Wijnaldum
After the second goal they went under mentally, which often happens in those situations, and then Messi made it 3-0, Salah missed an open goal, and after that Liverpool had to throw the kitchen sink at them to try and get a goal, which left barcelona with acres of space on the counter
I don't think this was down to experience, just the talent differential on the pitch