The phrase "are essentially equal" is correct and usable in written English.
It can be used when discussing the similarity or equivalence of two or more items, concepts, or values in a general sense.
Example: "In terms of functionality, the two software programs are essentially equal, providing the same features and user experience."
Alternatives: "are fundamentally the same" or "are basically equivalent."
Chad Hume, deputy director of the Public Service Commission's office of telecommunications, said: "It is essentially an end-of-the-day determination that when taken as a whole, the economic costs and burdens associated with providing service in a community between competing providers are essentially equal".
Under immersion conditions, equilibrium solubilities for all three forms are essentially equal, averaging about 130 wt%.
At the start of the optimisation phase, the ants move more or less randomly, as the moving probabilities are essentially equal for all features and parameter values.
Values of the Mark-Houwink-Sakurada exponent, a, for three different types of poly phenylp-tolyl)siloxanes are essentially equal, at ∼0.83.
More or less implicit in the theory of materials of this type is the assumption that all of the fibers are straight and unstressed or that the initial stresses in the individual fibers are essentially equal.
We show in a 2×2AFC task, designed to minimize any potential artefacts due to criterion level or response bias, that sensitivities are essentially equal for shear and uniform motion under general conditions.
They are bounded on both sides by steeply dipping normal faults, along which movement has been essentially equal, resulting in blocks that are scarcely tilted.
For 90 minutes, the rivals will be essentially equal, creating what Mr. Romney's advisers believe is a critical opportunity to make a move in the race.
But the results showed instead that "the overall level of prejudice against these defendants is essentially equal" in all of the places surveyed, the lawyers wrote to the judge.
The element is present in the igneous rocks of Earth's crust to the extent of about 0.001 percent, which is scarce but not rare; its abundance is of the same order of magnitude as such technically useful elements as cobalt, nickel, copper, cerium, and lead, and it is essentially equal to the abundance of nitrogen.
Domestic violence is just as likely to affect men as women; one in five males in the United States has been sexually abused; males account for nearly half of all missing persons; the number of male and female child prostitutes is essentially equal in major cities; and more than half of confiscated pornography depicts boys, not girls.
