Call it what you want....metropolitan witnessing, street witnessing or door to door witnessing! WT labels all baptized JWs as bona-fide and genuine ordained ministers of God's Holy Bible.
Regardless of the age of the JW Witness (whether 9 years old or 99 years old), he/she should by WT's standards be fit to defend the Truth found in the Bible regardless of the informal setting he finds himself. That's why they refer to themselves as ordained Ministers.
So those of you who feel these young greenhorn amateurs were at a disadvantage....take it up with these kids 'Mother' (WTBTS) who put them there!!!
All the cameraman was proving was how unfit most JW's are in defending the 'Good News'!