Good to see you found your way to WWFF.
There are a couple of questions in your post. One has already been addressed by Luciano – credit is given once you reach 44 regardless of how many logs you used.
Why 44? Well, this has indeed been debated before. National programs use(d) different thresholds aimed at giving chasers a fair chance to work an expedition. In the end 44 was chosen as default for WWFF as it is the program’s magic number.
Why are there differences between programs? WWFF was initiated by a number of national FF programs. These programs had some differences in their award rules. A lot have been homogenized but the threshold for the activator award is one that differs. So WWFF is a cooperation of a large number of national programs that have agreed to disagree on that particular item.
Hope this answers your questions. Have fun /P.
73, Lars / PH0NO