Actually that's not true, MK was heavily offense-based only in some very specific games, but others not. Original MK1, MK2, MKDA, MKD, MKA and MK9 were all very neutral-heavy games, and MK11 was basically an updated version of MK2. Even MK4, while having the run mechanic, was more of a poke-heavy hit and run game than a Rushdown-oriented one. Only MK3 and it's iterations (UMK3 and MKT), MK Vs. DC and MKX were very heavy on offense. And as for MK1, even though it is more offense-based than MK11, it is not as offense-based as MKX or even MK9.
People have this misconception that MK is heavy-offense-based just because it is done mainly for casuals and single player guys, especially with how MKX was, but it's actually not true.
As for Tekken 8, it was always way more offense-based than MK1. Sonic Fox for one already compared Tekken 8 to MKX just about 3 months after it's launch, even with the things that Kameo Cyrax and Baraka could do, that was nowhere near as oppressive as what T8 chars could've done, and now with this latest patch, T8 might actually be even more offense-based than MKX before it's last patch, giving a ran for it's money, and even then I'm pretty sure that I'm being generous.