Posters shouldn't have to start every post with "In my opinion" -- but shouldn't assume theirs is gospel, either.
But you're right, no one can know what you see, even sitting next to you, because you might turn your head and miss a play (busy looking in the stands, the way Mantle did in Ball Four).
Thus, Ben Intendi was the best defensive Sox leftfielder since Yaz. Beni > Rice, Greenwell, O'Leary, Manny, Bay, Nava, Gomes, Crawford, Hanley, Holt and Dugie. Is that ever a grim list...