Comparing the X2 to the V-22???
LIke comparing a Model T to a Corvette, isn't it? .
The V-22 has been in development for nearly 30 years. It has a top speed of over 300 mph (not the 250 that you mention in the article) and can carry (Take off and fly in airplane mode) with a payload of nearly 30,000 lbs.
Most navy aircraft applications (that which the V22 was developed for) require two engines, a requirement that the Navy set in place.
Fantastic that the X2 can fly on one engine. So can the V22, should one engine go out...nice to have when you're over water, or anyplace else with projectiles aiming for you. This is why a majority of naval transport aircraft through out recent history have had two engines.
The X2 is a fantastic aircraft. It's getting a late start in overcoming some of the fwd speed issues that the V22 tackles, but the X2 does it differently, and will most certainly find a niche to fill. I can see the Army grabbing a hold of this one in lieu of the V22's little brother, the Bell 609.
But it has a LONG way to go before it can go head to head with the V-22 or a 609 for that matter.
I'm sure the gearbox issue will get fixed in a hurry. Not much detail in what kind of problem it is. Noting that it has flown successfully already, I have to believe that it is not a serious issue.