by a long way
(idiomatic) To a considerably large extent, easily. Typically used in the negative to indicate something far removed and not easily altered.
In a 52-48 referendum this would be unfinished business by a long way. If the Remain campaign win two-thirds to one-third that ends it. Nigel Farage
Thiago Silva is the best centre back in the world by a long way. Thiago Silva
The best driver in Grand Prix racing, the best driver in the world by a long way. Ayrton Senna
In the Golden Age, Inspector French and Superintendent Wilson were very good husbands, but not the most exciting chaps to read about, not by a long way. Source: Internet
Since we now dominate the entire planet and our numbers out-rival by a long way any other large animal it seems hard to assert that we need a major, and likely risky, upgrade. Source: Internet