I wonder, is it really sensible to class the LR as 'MBT'? Whilst making it a SHT is a bit daft, it is a 'supertank' in that it oughta be damn good. Positing it to be the Marine MBT seems silly, IMO.
Rather, a points drop could be supported if it were noted that, unlike the LR, the Pred is more like the Rhino: Easily repaired. Thus though it's not a terribly survivable game in Epic terms, metaEpic it's very easily salvaged by trained crews. The armour is easily reforged and the internal systems are surprisingly resilient. Thus it isn't a terribly tough tank, but the cost to deploy it for Marines needn't be terribly huge either.
Still, I'm probably biased. I do feel 40k ought to be the 'Capture a proper Marine force properly' medium. When you start playing with them in Epic, BFG and Apocalpse you should be seeing the 'weak' side of Marines. Not that they're weak, but that you're probably fielding about 25% of a chapter and if you mess up you've messed up very badly. You'd need a
proper 40k Strategy Game before you start fielding Marines sensibly again (i.e. when you're dealing with their entire assets, e.g. their intelligence, rapid deployment to a system, all their non-battlefield skills [crippling supply routes, striking against HQs and bypassing most of a world's defences etc]).
Of course, if players are agreed on the capababilities of their forces, then using IG vs Marines in an Epic Campaign likely represents repeated frontline Marine strikes against high-level IG HQ and supply regiments, not the 'idle' garrison units of a world.
In that regard, I favour the cheaper marines resolution. Stat-wise they aren't really too bad (though IIRC the Vindicator and Dreadnoughts still give me most cause for 'cheaper might not help' concern).
