It's more about Josh's serves - only 39% first serve percentage in the first set. But when he puts them in he's winning the points, as shown in the first game of the second set.
Typical - BBC 2 has been on for 1/2hr all they have done is talk about Fed and Andy - Surely they could have mentioned Josh even though it is not good news. Now they too are switching to Lopez v Kendrick which is already on 'red button' channel, what a waste. Josh who?