The build time does indeed take longer (justified previously because you couldn't cut it with Wire cutters and just cheese the hell out of people on certain maps). It might have more HP than normal wire but its kind of a moot point really since you don't really nuke wire with explosives all that often - bright side is that patch gives SPs their build time Vet sooner so your Vet 1 Pios can lay it down faster >.>
Well, I think that, if there isn't any functional difference between the wires, why make it take longer to build? Even with the vet1 rework, most games you see wires beeing laid in the beginning of the game, not in mid or endgame.
This isn't a super important issue, but I think it can at times be a little unfair, and can be easily amended.