In the long run, if you're willing to spend 50+ tokens on green packs, then yes.

Scout players are good if you're not willing to log in every hour to train your players, but stick 50 green packs on an 18 year old 4/9 quality Nordeus Gen, and he'll be just as good, if not better, than a scout, albeit without an SA.

Problem with powertraining is that you will also need to invest in red packs as you'll get a few injuries training a player constantly on hard.