Ouch. Ouch ouch ouch. I even kind of feel sorry for this guy:
This time, all the nano in the world wasn't enough.
Sometimes, you have to move something expensive. And when it's blueprints, a nano-fit stealth bomber is the ideal choice. 99.8% of the time, you'll be perfectly fine, even in null-sec. Nano-bombers are almost impossible to catch if they don't want to be caught. I prefer Hounds for this work myself (given that they're already the quickest of the bombers, and can be nano'ed even further). I had to move some of my own blueprints recently and a nano-fit Hound was what I used to do it. Still, there's nothing wrong with the Manti for this job.
Other than the nano lows and rigs, though, this Manti fit is... eh. If you're serious about moving blueprints, fit ECM. I know I sure did, when I moved my blueprints. Dropping the torpedo and bomb launchers for something smaller is also a prudent move. Bombers make surprisingly decent frigate attack platforms. Fit a few small guns or rocket launchers so you can give the other guy some second thoughts. While he's having them, pray for an ECM cycle to jam him so you can warp off. ;-)
Still, that is and should remain Plan B. Plan A is sneaking through gates with a cloak, the fastest align time and the quickest warp-off possible, which this fit should have been able to provide.
Except if you make one little mistake... and there happens to be a good decloaker nearby... you can suddenly need that Plan B in a hurry. I've already made my feelings about the Taranis in the decloaking role plain. ;-)
This kill-mail is proof that it can do the job. Had the bomber fit an ECM or two, though, the crappy sensors of the Ranis would have been quickly overwhelmed and this pilot would probably still have his blueprints right now.
So, learn from this guy's mistake, and always have a Plan B.