Hope ya know I was just teasin' ya Dave

As for your question...depends soley on the individual bow, how it's setup, and how the cam system is designed.

Best horizontal nock travel *I* have seen has been on the Mathews straightline type cams on the Legacy/LX/OB, The PSE NRG single cam,andthe Darton CPS. I have not looked at the new Binary cams. A properly set up Hoyt C.5 or a well designed 2 cam systemhas excellent horizontal nock travel too.

Some bows will never have it regardless of cam because of other issues...lack of QC in matching limb deflections &location of grip on the riser being two big offenders.

That's not the whole picture though. Vertical nock travel IMO is more critical as the shooter can exxagerate that problem much more easily, and it's much harder to "tune" out.