Do with it what you will.
I personally think Fletcher’s stickies are too strong, but that’s just my opinion.
To be clear, this data was recorded to compare the “optimal” loadouts of Fragger to Fletcher. The Frags here have Explodydendron, the Stickies – of course – do not.
OP, I dont think Fletcher bombs are too strong. Consider the fact that they will often times stick to surfaces and miss enemies since they dont bounce. Plus they have to be manually detonated. I cant tell you how many times Ive killed Fletchers before they could detonate their bombs near/on me.
Fraggers though we kill me if they cook and aim properly. And even if their aim isnt true, they can still get the kill. With Fletcher sticky aim is more important since like I said, there’s no bounce. And given Fletchers health pool, I think his stickies are just fine right now.
Id much rather face a fletcher than a fragger 1v1
Anyone else wanna chime in? I think the chart is rather informative.
I’m pretty good with Fletcher’s stickies. They don’t one-shot most mercs, and they take time to detonate. Unlike Fragger’s Frag Grenades, which can be cooked to explode right on target, Fletcher either has to lure in his enemy into a trap with multiple stickies, or chuck one and blow it up, and then shoot him. It takes a lot more time (and perhaps some thought) to kill with Fletcher than with Fragger.
Alternatively you could spam wall jumps while throwing them in the general direction of the enemy, detonate them, and then finish them with your guns. That’s how most Fletcher players play him. I’m guilty of it too.
Well, I suppose that can happen as well. 
Still takes a lot more time than chucking a cooked grenade (minus the cooking time, since you can do that from behind cover).