I agree, so I went and looked at the numbers and posted comparisons of top WR's (names everyone knows), and Wingo is more in line with Ryan Williams this year, while Bryant Wesco, Jr. is complimentary to Smith.
Wingo - 24/320/4
Livingstone - 15/308/3
Ryan Williams - 26/423/3
TJ Moore (Clem) - 26/407/3
Anotnio Williams (Clem) - 23/225/0
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Smith - 49/602/7
Wesco, Jr - 31/537/6
As you can see, you need both a good (not great) QB and a good (not great) WR to put up those numbers. Wingo and Livingstons are doing a lot of work for Manning. They have 7 of his 12 TD's.
Smith and Wesco, Jr. are outliers because they're built different (not physically, but mentally). Smith, regardless of who is their QB is going to look outstanding. Wesco has only had Klubnik, but he's doing a lot of work.
Arch has 114/189 for 12 TD's and 5 INT'S for a QBR of 58.6 (75th in the country)
Klubnik has 133/202 for 11 TD's and 5 INT'S for a QBR of 62 (68th in the country).
Not a whole lot is separating the two other than one has Wesco, Jr while the other has Wingo.
So, as of game 6, I would put Wingo with TJ Moore and Ryan Williams in production, which is not bad but not outstanding like the two aforementioned.