Walker is so completely crap, what on earth was he doing, backheel then flop over and pray for the damned freekick? Pathetic in every single way possible, a long shot that was quite easily saved even if it looked dramatic, doesn't make up for being useless defensively.
"gets forward a lot" is far far too often mistaken for "has quality so goes forward".
Walker can't defend, defence first, forward later and only worth going forwards if you actually have quality in the final third, he doesn't.
Baines is better defensively, better offensively, he goes forward less, has less pace, but when he does his delivery is brilliant, his shooting is very good, his interplay with the left winger is good and when he's back he's a great defender.