I really don't see what you allegedly see. There was a time when he was playing really well but then deteriorated about 2/3 months before he got injured. He's not the man to partner VVD. For me he's a wink link and needs replacing. Injury prone too which might be the reason he wasn't playing at his best.
I can see where you are coming from (although I disagree). He's not a flashy player, plays with a partner who gets most of the attention and is world class. However, Joe is the type of player that will give you the constant 7/10 90% of the time (the other 10% of time you might get a stinker or a MOTM performance). He did struggle a bit in the first month or so whenever he was coming back from a long injury but other than that I think the man is underrated for what he brings, the quality at which he brings it and the consistency with which he brings it.