CR still runs DC rakes on which are older than those retrofitted.
CR runs trains retrofitted trains too.
CR also runs BHEL retrofitted trains
CR runs around 50 outstation trains daily (from CSTM) whereas WR handles less than half of them (from BCT)
CR...
more... itself handles majority of operations on harbour line. CR trains are used for harbour line trains. Sometimes a WR rake might be used.
there is clearly no comparison