There's no published evidence that FR fly (or land) their aircraft differently, or better or worse than other carriers. Circumstances are different on every approach to an airfield, and there are often factors in play that may not be evident to customers: For example, ATC may sometimes ask an aircraft to clear the runway ASAP to enable another aircraft to depart or arrive, and this can result in a longer roll-out or harder braking to make a turn off.
It is also worth noting that runway length and condition (wet/dry) will afect the landing technique significantly. Clearly a dry, long runway with a light aircraft (such as at LHR) will require a different technique to a wet and shorter runway with a heavier aircraft.
I suspect that in the circumstances outlined above, the perception may be of one thing, while the truth is somewhat more mundane - some landings are just smoother than others: Sometimes those you expect to be smooth and gentle go wrong in the last 10 feet, and vice versa. It's just in the nature of the beast.