Titanic

Titanic is the easiest rating for One-Use Powers and requires Ultrapower [30] (S30) to access.
The example on S113 using Tommy Franklin (who has no levels of TK at all, only TK talent) defines "pushing aside tons of rock" as still merely a titanic feat.
Since his critical success cost him only 1 FP, this was also a Simple feat and not Average (2) or Complex (4)
Although it takes 1dx10 minutes to prep this, that's still worth a LOT of levels of TK.
For example since you can lift 8xBL in 4 seconds using 2 hands... 2 tons is 4000 pounds, requiring a basic lift of 500 to get up.
Converting BL to requiring Lifting ST requires multipliying it by 5 (2500) and then finding the square-root. That is conveniently easy to calculate here: ST 50.
TK 50 [250] is not necessarily the equivalent here because of it's very narrow usage. This is effectively Using Abilities at Default (except not paying 3 FP minimum) and you could take Lifting Only for TK to discount it, along with Immediate Preparation Required or Takes Extra Time
category:rules
Category:Powers