Point cost arnt even equivalent. This is like comparing sapodila to durian. Two widely different fruits compared to apples and oranges.
He is entirely right about that, the problem with this is that the Russ has the power to one shot nearly anything if it hits, not barring
inv saves. However with the addition of a commander and Pask, you get all of their special rules, and re-rolls. Its just that the Vindicare is an extremely more versatile character on the field. Being able to shoot from one end of the board, to the other on all but the insane apocalypse settings. Re-rolling misses up to a 4, ignoring cover no matter what. Three forms of ammunition giving him the ability to effect basically any target on the field no matter what their stats, or armament.
Give this guy a close range weapon with
ap 4 or 3 like his partners, and I dare say he could handle anything you throw at him. Despite being only toughness 4, his 3 wounds, and 4+
inv save. (being
op is why he lost the 4+
fnp as well) can keep him alive through some pretty nasty situations.
In fact I've had my Vindicare pop that exact same build of tank in turn 1, more times than I've seen any tank do to him in the whole match. The Vindicare's true power is in his ability to see any unit he fancies from across the field, and wound it or outright kill in at a whim. Got an enemy havoc squad with a lascannon? Sniped... Enemy Sargent or command squad? Sniped... be it a terminator, or whatever.
He only fails on a slight majority against two units.
Monstrous Creatures & Characters - More specifically being models with multiple wounds a piece. If you can take it out in one hit, than its more of a tactical target for him. Though you can still fired a Turbo Penetrator round at the guy and hope to roll high on a D3.
Vehicles & Flyers - Being that this is mainly because of the same reason above (multiple hull points) this is more or less because of the flyers. Even with a insane
BS of 8, he is highly likely to miss flyers. Thankfully the re-roll allows you to alleviate some of that problem. Finding a cheap way to give this guy sky fire on command would be a nice way to even that out.