"no less great" is correct and usable in written English.
You could use it to express that something is just as great as something else. For example: "Her second album was no less great than her first."
Sometimes it's a divide that seems no less great than the one we've witnessed for way too many years now.
Regional wealth disparities in the US are no less great than they are in Europe.
But "Passion" (1982) in the Lionsgate set is no less great.
It was a great restatement, and no less great for that.
He maintains that while pollution may be less visible today compared to decades ago — "We don't see rivers catch on fire now, we don't see valleys filled with drums of chemicals" — the need for the EPA is no less great.
And for the remainder of what is now Sudan, the challenges are no less great after losing most of what it has survived on over the past 20 years: oil and other natural resources.
At first, it was no less than great.
Give Miss Millay a desk at party headquarters alongside Orrick Johns and Alfred Kreymborg and we bet she's still be lonely, and her stuff no greater nor any less great.
Plenty of less turbulent energy-producing nations are no less keen to capture a greater share of the money and power from their resources.That is natural enough but there are sensible and foolish ways of going about it.
And as Sophocles stated no less germanely, "The greatest griefs are those we cause ourselves".
She had traveled from her village located at Isondra in Betsileo country to the south which had been destroyed by fire, walking the great distance and traveling only at night in order to deliver to the king what she called Kelimalaza ("the Little Famous One"), giving the impression that it was no less than the greatest treasure in the land.
