QUOTE
The answer is seek is why they show a different value of sectors when it comes to burning the image with clonecd.
Because the filesize is different?

Pretty good reason why one would have more sectors than another...
A splitvid has the video partition inserted twice, once on each layer, and xtreme 3.0 or whatever it is had the video bit put in only once - they will both pass the stealth checks fine (which wasn't what I was telling you to look at when using schtrom/mulleter - I'm telling you to look for some specific information those programs give that ISNT "stealth passed" or "stealth failed"), but will list the image as being different in the video portion. That would account for the size difference, even under clonecd (the software that burns it doesn't matter, the number of sectors burned would not change from software to software.)
Here is what I have for valid filesizes that check out under shctrom's stealth check (that lets you get the additional CRCs):
7,835,492,352 (7.29GiB) - splitvid = 3825924 sectors
7,572,881,408 (7.05GiB) - xtreme 3.0 = 3697696 sectors
7,705,657,344 - NME patched = 3762528 sectors
"Schtrom360extract returns a value of 3825631"
= 7,834,892,288 (not a value I have seen before, a diff of 600,064 bytes to what I'd expect it to be)