The phrase "arguably well" is correct and usable in written English.
It can be used when expressing a subjective opinion that something is done well, while acknowledging that this may be open to debate.
Example: "The project was arguably well executed, considering the limited resources available."
Alternatives: "possibly well" or "potentially well".
And software companies are arguably well placed to develop technology such as automated driving.
The predictive computational model applied in this work, in spite of many simplifications, conforms arguably well with the experimental observations.
Citing "a public unhappy about the economy," Mr. Bayh urges that Congressional Democrats move to the right (arguably well beyond "center" — even President Richard M. Nixon favored universal health care).
She also brought a certain interpretive austerity that was arguably well suited to these selections but was bewildering when applied to her closing piece, Godowsky's Symphonic Metamorphosis on Themes from Johann Strauss's "Fledermaus".
Despite it being Cadbury's most famous, and arguably well loved, product, Mondelez decided to go ahead and change over 100 years of consistency by rounding the corners of the chocolate bar to "improve the mouth feel".
Nucor came in as a theme for basic materials, and it's done arguably well.
Pattaya, about 100 miles from Bangkok on the Gulf of Thailand, is a hugely popular resort that has – unlike the bridge club – an arguably well-merited reputation for impropriety, notably connected to the sex industry.
It's a poorly designed, constitutionally dubious policy -- one that failed to meet its arguably well-intentioned purpose the first time around.
And OK, yes: Consultants, investment bankers and the like put in 80-hour weeks and are arguably well-compensated for their time.
A small, but arguably well-clad group of starlets and songstresses hit the pink carpet in N.Y.C. on Tuesday night for Lorraine Schwartz's "2BHAPPY" jewelry collection launch.
This arguably well-intentioned shot at a climate agreement detonated as many representatives of the remaining 186 countries involved in the Copenhagen talks reacted angrily at being left out when it was drafted.
