Away kit is better (8)
I believe the answer is:
outstrip
'is better' is the definition.
(thesaurus)
'away kit' is the wordplay.
'away' becomes 'out' ('out' can be a synonym of 'away').
'kit' becomes 'strip' (I've seen this before).
'out'+'strip'='OUTSTRIP'
(Other definitions for outstrip that I've seen before include "Go far ahead of" , "Perform better than" , "Move faster than (someone else)" , "Outrun or surpass" , "Exceed, overtake" .)