Rival lawyers in the vicious defamation battle between sharemarket entrepreneur Tolga Kumova and his Twitter nemesis Alan Davison have attacked their credibility as witnesses in final submissions to the Federal Court.

Solicitors for Mr Davison, better known by his Twitter handle Stock Swami, said Mr Kumova’s evidence around his share trading activity and tweets was at times false, unsatisfactory, inconsistent, evasive and tailored.