Compared to a Valk/Vend they seem expensive points wise, but thats in part to GW
really seems to want to sell lots of valkyrie kits
In terms of firepower though, the HH
variants seem to have an edge with niche-tactics. That being each one is designed to do one thing quite well, but in a slightly different way. A base-line Valk/vendetta is abot the same cost- but to upgrade it to put out equivalent anti-troop fire power it takes the rocket pods, which up the cost by 30pts.
But, I think the real strength the HH
has over the Valk- is its a fast tank- hence it can tank shock(and even ram lighter vehicles with the speed fasctor). Since its weapons are designed for close in support its gonna be close anyway- savvy manuevering can utilize tank shock to 'herd' your opponent into better position for ordanance and template weapons
So, thats my 2 cents worth of left over sprue bitz