Maybe the best linkshells could do it, maybe.
However most linkshells were struggling to kill him with optimized setups and good people playing support. I don't see 4 thieves keeping up with 4 of the typically stronger DD.
Also remember that Tojil dropped the weapon that made killing Tojil easier so while the first kill was rough, the second+ kills became much easier, especially if monks who didn't get oats as drops were willing to go and get them. I see the fight going on too long, stacked with thieves, and Tojil becoming very resistant to stun, but who knows. Could work.
