if you don't happen to be in the right part of the stroke on that first kick, you're not starting until the second,
I've never found that it makes any difference where it is when it's hot. It will start kicked from anywhere in the engine cycle
Having said all this the only benefit in having the auto then rests with not having the extra lever... the benefit of having the lever is being able to do certain things like blow the motor out if you go swimming, flood it out by endowing... things of this nature; and for all the guys who've never dealt with manual decompression, an semi-auto-theft device when your bike is sitting around camp.
Yeah, they always try the anti-theft dodge, don't they?
Also makes it tough for you pals to start the bike when you hurt yourself and need them to help.
valves and an open throttle will clear the cylinder at least as fast as a valve lifter. And the bike will bump start like a 200cc two stroke. Let's say you kill the engine blasting into a turn by getting carried away with the brakes. With manual decompression, there are two things you can do, you can let off the brake, pull the compression release and leave the clutch alone, hoping the engine will start to turn before the engine stops, and that you'll have time to feed the release back out smoothly enough to get it to fire, or, let off the brake, pull the release and the clutch, dump the clutch, feed the release out and get the engine to fire before it runs out of forward momentum. Being raised on big British singles, I'm intimately familiar with this procedure, and everything else that you do with this device.
In the same situation with auto-decomp, you let off the brake and flick the clutch once, same as a two stroke. No problem.
Before I owned my first YZ450, I almost bought a 426 instead just because of all my experience with MCR's and all the tricks you can do with them. I haven't missed it since the first week. There is no advantage to them whatsoever, and they belong on the shelf with mechanical ignition advances, and the rest of the antiques.