Link is not a waste on PvP if you can manage it, modes are 2vs2 or 5vs5, + summons, you can link all those, links above C1 are useless, but C1 is actualy pretty good.
I haven’t lost even once to a Necro and I don’t remember losing to a Kino 3. I was placed 8th on 2vs2 duels before todays battle league at 4 am (which I didn’t play).
I know Necro is strong on PvP but those minions are nothing when I have Links and honestly, only stupid people os summons get a lot of hits from Flesh Cannon, Bats + Theurge are sure hits.