I did not suggest gap difference of 700 tons between FREMM and USS Constellation and any implication of their difference.
You wrote:
Presumably the new Chinese Frigate (Type 057) be a good enough to keep up with the carrier battle groups. Will it match the capabilities of the USN’ new Constellation Class?
And I wrote:
Comparing a 6,700 ton heavy frigate vs a 4,000 tons frigate is like comparing a 12,000 tons large destroyer vs a 8,000 tons destroyer.
6,700 tons referred to FREMM and 4,000 tons referred to type 054a and its rumoured successor type 057 (If this type ever exist at all)