1.3 is coming to consoles next year. There's no way PC could reach 1.5 by then, especially since 1.4 might not even happen, but rather, smaller updates, like 1.3.1, 1.3.2, and 1.3.3. Also, even if Re-Logic actually doesn't care about console edition, it would make sense that they don't;
they don't develop it. Literally nobody from Re-Logic develops console edition, as far as I know. PC updates aren't much faster than console updates, either. The PC version started receiving updates first, is all. Also, PC now has controller support, in case you just play console for the controller (even though, IMHO, Terraria has far too many important buttons to be confined to a controller). If you play for local multi-player, that's a different story. Finally, just to reiterate, please don't complain to the PC team. Sorry if any of that seemed mean, I'm just trying to help.
EDIT: I got ninja'd