When you want fair comparisons made while looking at the cycle to cycle jitter numbers, there are few points to remember as follows:
As specified in JESD65B spec, cycle to cycle jitter requires at least 1000 samples to be taken. So while comparing one should see if the measurements are made with the same number of samples. More samples will have more data resulting in bigger jitter value and less samples have less data resulting in lesser jitter value.
Also, JESD65B spec says that the cycle to cycle jitter should be mentioned as a peak value. So if any datasheet mentions that to be peak to peak measured, the actual cycle to cycle jitter peak value becomes half.
For fullproof comparison, request samples and measure with the same equipment and conditions.