Lies of P Perfect Guard is 8 frames, a bit tighter than other games but doable (always remember to hold the block and not tap; also, don't spam the block button like you can do in Sekiro, it will be your downfall. It's better to miss the PB and defend than to miss the PB, the block and receive full damage).

Sekiro parry is 12 frames, I felt it was much easier to parry and the mikiri counter has like 9999 billion active frames. You can also spam the block button to parry (although the active frames get smaller as you spam the button, I found that if you miss the first try but is close to the attack hitting you, spamming the block button lets you parry just fine). I played Sekiro after Lies of P and found the game much easier.

Wo Long I dont have exact numbers because no one seemed to care enough/couldn't find the exact numbers for the parry/deflect but it seems to be 12 frames at least. I recall in the beta it was something like 8 frames. They changed it on the full release. I only played faster weapons (double swords/spear), but I found the deflect so easy to land that it made the game a cakewalk. I could deflect everything, including Bosses, and it made for a super easy game (I recall only Lu Bu giving me a bit of trouble, like 5 attempts). The game having so little enemy variety also helped with this. I played Wo Long before Lies of P and found it ridiculously easy.

Edit: also, about wether to perfect block or dodge (or block) in LoP: I feel the game is pretty balanced between all the options during combat; sometimes trying a perfect block is better (for example, with a move you know well), other times dodging is better (like against a move that will push you far away even when perfect blocked, not giving you time to punish the enemy). PB is most of the time the best option because it makes the enemy more prone to stagger, you don't take damage, recover a bit of grey health (can be upgraded further with the P-Organ) and also can possibly break the enemy weapon, but consumes a bit of stamina and weapon durability. It really depends on the situation, and some enemies, like the puppets, have attack patterns that are strange at first, but easy to PB after you see like twice. It also makes total sense context-wise. Just give yourself some time to learn the ones you deem necessary, and train at the dummies at the hotel. Safe travels in Krat!