It just shows how company SOPs can vary wildly even when flying the same a/c! I have flown the 757 for 3 airlines, 4 in a week or two and they all say 'V1, Rotate'. There are arguments both ways but I must say I prefer the method that keeps everything as standard as possible, just like acceleration altitudes - I like the companies that have us accelerating at the same altitude on two engines as on one, again arguments both ways but I find it easier to remember that way.
Another example is altimiter cross checks. My current company 3 different calls for checking the altimiters on the ground and in flight! There are very few pilots who get the calls exactly right every time! Standardisation? I dunnow, when challenged one training captain told me that the calls were that way to distinguish between on the ground and in the air
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PP