Amrun wrote:What exact runes/builds?
Are you laning him solo top?
Sometimes cloth armor +5 health pots will be a better start, then building into a Wriggles Lantern to give you some staying power in lane. Without it, you have only your passive for lane sustain, which isn't that much.
Rushing Warmogs isn't always the best idea either, but it depends what's going on in your lane. If you just want to be tougher against a physical attacker, chain vest will give you better value for money. Against things doing magic damage, you might want an early Negatron cloak or even go straight to your Wits End. Warmogs is a great item to have but not necessarily as a first item.
Atmas is a good choice and likely still will be after the nerf.
As for runes, Marks are usually better used for offensive stats, usually armor pen. I can't remember otoh what you get from MR marks but if you want MR I think it's better for them to be Glyphs or Quints. I'd replace the Health Quints, they don't offer that much beyond the first few levels.
Full offence tree would help you farm, but there's nothing wrong with defence tree either.
Bruisers are the hardest things to build, so just try and be as flexible as you can and react to what's going on in the game.