|An MSR Reactor|
Fortunately for that poor intern's sake, this video is mainly humorous and not real -- but there's some real content there. In winds that will blow out a Jetboil, the Reactor hardly even misses a beat.
On MSR's blog, there's a lot more factual information after the video. I'm not in a position to completely corroborate MSR's testing, but it certainly fits with what I've experienced with these two stoves.
What's my take on the Reactor vs. the Jetboil? Here are my reviews of the stoves shown in the video:
The 1.0L MSR Reactor
The JetBoil Sol (aluminum version)
The Jetboil is lighter. The Reactor is far and away more windproof. Both are good water boilers. Neither is a good stove for more than simple cooking.