@Bold XDCES is the apex of strength developed by Tsunade. The development of general CES began with the equivalence strength, under which the states of chakra manipulation and being focused in a punch are physically impossible. The secret of this is that ninjutsu is inertial unit per area damage control which Sakura mastered. This is witnessed with her CES feats and superior intelligence because in those techniques inertially moving forward with Sakura's development as a kunoichi. She went even a step further using her original technique Shanaro.
Her feat of killing hundred of Juubi clones at once surpasses every feat Tsunade has in the manga the most impressive being partially cracking ribcage with help from Gokage. Sakura far surpasses Tsunade and is at least SM Hashirama level.
Tsunade cracking Lord Madara's ribcage over Sakura putting all her strength with momentum against useless Juubi minions.
Did you really just put Sakura close to SM Hashirama?! XD wooooo I had a good laugh.