"no less easy" is a correct and usable phrase in written English.
It is an idiomatic expression used to indicate that something is just as easy as something else. For example, "Learning French is no less easy than learning Spanish."
Furthermore, Russia will find it no less easy than the West to deal with the local and regional consequences of the Syrian civil war.
… Hume responded that it made him no less easy than the thought that he had never been.
No less easy to understand, but on the face of it even less justifiably suppressed, are a number of other files due to have been released now.
The respectable mainline Protestantism that plays a crucial background role in "You Can Count on Me" is harder to capture than the Spirit-intoxicated religion of "The Apostle" -- but no less easy to caricature.
Things were politer but no less easier on the West Coast in the 1970s.
No hassle, less easy to notice.
The talent show's finalists now find that scoring immediate No 1s is less easy than it once was, yet the artists Cowell has given full backing to still contribute a considerable amount to the industry without completely whitewashing the charts.
Violence in service of rewarding themes or ideas is one thing; when there's no there there, it's less easy to tolerate.
Automatically identifying those results is no easy task and it becomes less easy as the size of the problem domain, and the number of already established results, grows.
Following Wilson et al.,[ 14] access to information technology was measured using a 4-point ordinal scale: easy access, less easy access, not easy access, no access.
Less easy to dismiss are those with no apparent commercial interest.
