Bartel vs JJK

[wixy]

Crunch time semi-final, my opponents team is slightly better and we both have Bartel on the field.  JJK is currently sitting on my bench. 

Should I play JJK instead of Bartel?

Bartel has a good record against WCE at Paterson Stadium, but his recent form is poor.  Which Geelong defender will go to JJK?  Is he likely to kick 3 - 5 goals?