The main question is, are these full blown clones of the originals? If that is the case, it can make for some very very interesting turn of events.
Take Mihawk's Seraph for example. If it wields that much power as a child, then just how much power will it wield as a full blown adult, enhanced by Vegapunks technology?
If it is a perfect clone, it could be just as strong, if not stronger than Mihawk himself, given the enhancements.
If all of them are like this, then most likely we would see a ton of beefed Seraphs, who all surpass their real life counterparts.
This would be a huge game changer, swinging the the pendulum in the favor of the Marines come the EoS war.