Counter point - Penrith's back 3 made 800 metres, a huge amount of which were from kick returns.
A big long kick, followed by a 20m kick return is in essence the same thing as a mid-field bomb where the tackler is hit on receiving the ball. Both result in tackle 1 being around the 30m line, however with the bomb they're not playing tackle 2 with momentum as they would after a big kick return. In fact we restricted the Panthers to less running metres in our match than the Eels did.
The long kick is great when you want to tire out the fullback and wingers (i.e. works on guys like Trell) but no so much the Panthers back 3 who never bloody tire.