The phrase "arguably achieve" is correct and usable in written English.
It can be used when discussing the potential or possibility of reaching a certain outcome or goal, often with some level of debate or subjectivity involved.
Example: "The new policy could arguably achieve better results in reducing waste than previous measures."
Alternatives: "potentially accomplish" or "possibly attain".
Outside shareholders, on the other hand, have merely ended up paying a hefty price for something they could arguably achieve better themselves.The assembly of financial supermarkets appears at first glance to promise more tangible benefits.
In this paper, this question is investigated with regards to the ozone formation reaction and a particular design of a microchannel plasma reactor, with parameters so chosen to arguably achieve low voltage operation.
The Open Source movement is one example of a revolt from "intellectual property" and the development of an "intellectual commons" in which many people freely share and contribute improvements to software and, arguably, achieve a final product that is superior in reliability to that produced by an individual software company.
But Mitchell has arguably achieved something more difficult.
The organic movement has arguably achieved a great deal.
As well as garnering publicity, the theft also arguably achieved the wider goal of its perpetrators.
It never disappeared even if, in a football sense, he arguably achieved enough to placate his doubters.
Mexican football has arguably achieved its greatest feat since the last World Cup, when El Tri won Olympic gold at London 2012.
With memories of "Black Hawk Down" in 1993 still raw, it has arguably achieved more than in Afghanistan, without putting a boot on the ground.
Pets.com arguably achieved a tremendous amount of mindshare, with its spokespuppet appearing in a Super Bowl ad and in the 1999 Macy's Thanksgiving Day Parade.
An efficient financial sector is vital for a modern economy but trading securities has arguably achieved too much importance in the Anglo-Saxon world.
