The idea behind the trade is considering what Ottawa gave up for Chychrun. 1 first and 2 2nds. Leafs give up their 1st, probably in the 15 to 20 range as the Leafs have a few holes and probably not ready to compete for cup. Similar range but slightly higher than Ottawa gave Arizona. Robertson was a 2nd rounder with good offense and top 9 forward, with potential to top 6. Hirvonen is still a prospect and 2nd round. Voit adds another prospect to system. That is a little more than 1 st, 2nds. The Timmins and kubalik is more 1 for 1 to give Ottawa a controllable young offensive defender help for depth while their prospect like JBD and Thompson grow. Brodie is part of a 3 way trade where Ottawa trades Brodie to a contender with 50% retained for a future 2nd/3rd round. That gives Ottawa 1 1st, 2 equal 2nds, and another 2nd for Chychrun which is more value that they gave.
Problem is Ottawa is a rival they may want higher rival tax with the package.

Plus Roni Hirvonen,

Leafs use Uncle Lou and his need for more scoring for a playoff push to advertise Bertuzzi and his return he got last year plus he playoff performance to squeeze a 1 st rounder back. Yes Bertuzzi production this year is nothing close to a 1st rounder I agree.