I believe that wikipedia is the most reliable of the bunch because they are the most heavily and regularly monitored and edited. databases like Sherdog and mixedmartialarts.com are updated rapidly with new info (and thus make great original sources) but mistakes take forever to fix, if ever, while wikipedia editors continually examine conflicting sources and are pretty good at figuring out who made the error and getting the data right.
His helmet was stifling, it narrowed his vision. And he must see far. His shield was heavy. It threw him off balance. And his target is far away.