To all those "discussing" Kastilla's objective control...
I am leaving the math here showing how long it takes a Kastilla can exceed Smite's damage late game. Assuming Kastilla has 300 AD Kastilla (109 base at max level+80 [BT] +80 [IE] +40 [LW]) Rend will deal an initial 260 damage for the first stack (60[base] + 200[60%ad]) and 132 (32[base] + 100[30%ad]) with every stack after. Assuming she has a last Whisperer Baron's armor will be reduced from 120 to around 80, meaning it will have 45.5% reduced damage, causing the Rend damage to become 142 (rounded) initial and 72 (also rounded). This means that she will need 12 autos to exceed the 1000 damage cap of smite (1000 [smite] minus 142 [first auto] divided by 72 [following autos] =11.9 ). Also assuming that Kastilla has hurricane and Bork she will have around 2 autos per second, meaning that it will take a lategame Kastilla a total of 6 seconds to exceed Smite's damage cap (12 divided by 2). Note that by this time her autos (not factoring crits or Bork's passive) will have already done 1962 damage (300 damage per auto times 12 autos then reduced by 45.5% from armor).
For those wondering I took the values used her from Kastilla's and Baron's wiki page at LOLWIKI and have linked the armor/MR damage reduction list below.
NOTE: I am not taking sides in the debate, I just want to give the math and facts for her rend damage so that people have something solid to base their "discussions" on, make of it what you will.