While Borden and Leo were busy fighting the Original vampire Remus. The others were all busy dealing with their own opponents as well. There was no slacking or time for any of them to rest.
Paul and Kyle were both fighting together. Although, it turned out the rumours about the older generation vampires being stronger were true. While fighting, Paul and Kyle would both use their blood swipes together just to match up with one of the eighth family's past leaders.
If they didn't then the old leader's swipe would overpower theirs.
However, just because one had the strength of two people, it wasn't the same as fighting two and the eighth leader would soon find that out. Paul had activated his soul weapon and was using it well, attacking him all around.