Are the legendary pokemon in this game better than their older versions

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I recently transferred a bunch my old legendaries from previous games into ORAS using the poke bank and poke transporter. I'm looking to put some of them on the GTS but im not sure which versions are better and worth holding onto. (ex: entei, raiku, suicune, cobalion, terrakion, virizion, landorus, tornadus, thundurus)

Best Answer

Other than having the Blue Pentagon mark (The '6th Generation' mark), and possibly better Individual Values (IVs), there wouldn't be any difference (stat wise).

In terms of value however, both have positives:

  • Previous generation Pokemon can:
    • have moves that they can't learn in the current generation
    • have Pokeball designs unavailable in the current generation
    • have Ribbons that are unobtainable in the current generation
    • be old 'limited time' special Event Pokemon (sometimes with special moves, like Flying Pikachu) which are harder to obtain.
  • Current generation Pokemon:
    • Are tournament-legal (Blue Pentagon)
    • have your OT Name/ID, and are thus nicknameable
    • Can be more easily farmed for better Nature/IVs

Thus both previous and current generation Pokemon have value, but to different people for different reasons. The former will be highly sought after by collectors, the latter by people looking to battle competitively.