no, it is 3/4/4/5/5/6/6/7/7/8/8/9/9/10/10 targets from lv1-15, and each level hv +10 hits limit count.
shared buff is C2 skill while share stat is C3
C3 only hv additional 2 targets+50hit limits and shared stats.
The additional 2 targets good to have but not a big deal since high level most classes do AOE damage.
The additional 50 hits limit also good to have but usuallys everything dies with 100hits.
The shared stats pretty useless, most physical build have dex, most magical have int, you may share CON but it only 50% uptime and it will break if member too far