He got a damage buff and he can hold the guard stance out as long as he wants, so you can't predict when his stance ends and punish him.
Every other Robotmaster with a Shield is Superior to Enker,
They just need to stand next to him and wait till his Shield runs out.
Since he freezes nor turn around while doing, cant do dmg while shielding and is too slow to run anyway.
He cant make a gap between enemys = certain death.
Normally hes fast enough to close any gap to attack, that made him dominating in some way.
You cant even switch actions without getting punished,
the moment you Attack you just get countered.
Enkers Shield Bar freezes the moment you Attack. ( no logic behind that )
So your always on the bad side no matter what you do,
(Like if you succeded to hit the enemy, you will get punished with extra cooldown time???)
And hes actually the non themed Megaman Killer Boss of Wily.
Kinda hilarious, that hes the weakest now.
Theres a Reason why Megaman doesnt like Sticks Pointed in his Direction.

(Joke aside, REALLY NOW)
Enker is only Quick Man-level in MM10, though. He moves much closer to Mega Man's speed in Dr. Wily's Revenge.
But still faster then the "Regular" Speed
Hes equally fast to Quickmans Speed, even in Dr. Wily's Revenge (it looks even faster then that)
Enker is Superb as a Killer and cant be used as a Refrigerator.
Much missleading Pro's & Con's.
Fireman is Hot,
Iceman is Cold,
Enker is Awesome,
Let it be told.

I like Enker too much since Dr. Wily's Revenge , to ignore this.
My First Sub-Final Boss in my Life (without Transforming into something hideous)
4 Years old, to clear it the first time

But i guess im talking too much, it will be ignored with 100%.
Since the changings are just rounding up the guesses.
The wad is made to the Favor of a small group of People. (with Favors)
Would be better to do the same and revamp the whole thing like everyone does... ( Justice )