To you it's known as shenanigans or bullshit but to them, much of the set ups are common knowledge and that information flows freely at green arcade. Whether you are a noob or pro, you will be instilled with knowledge of how a certain character plays and things to watch out for as you are playing from the get go. I found this out while five guys were hovering over me giving me advice while the Tekken lady gave me free iced coffee in the first hours that I was there as a foreigner before meeting the big dogs (sunchip, rain, Hao, ace, etc).
"Shenanigans" as a word to westerners has a negative connotation of being cheap or unpredictable. Where as in Korea.. Shenanigans is known as "technology" which doesn't really make it a chore to fight against but rather, something to embrace and try to adapt with your character. It's not a chore like it is here and I think the main reason is there's no ego to defend since everyone there are friends.
They do spend a lot of time playing at Green but I don't think it's to stay #1 but rather to just have fun. Many of the players there show up after a long day of work (some in business uniforms or medical attire) and just hang out and catch up with each other without even playing. An example of this is sunchip showing up and talking to me in hilarious broken English "WASSSSSSSUP MANNNN????" for hours without even sitting down at one of the cabinets.
The biggest thing people actually do at green arcade is not playing but actually spectating the death matches. After they're done, they usually just go out to drink and eat. The top 30% of players usually beat each other with no clear #1 player in sight save for few players such as Knee, Saint, or JDCR. I also saw a ton of underused fighters as well such as Yoshimitsu, Asuka, Ling, Wang, and Baek being utilized at their fullest potential beating even top tiers.
As for fighting the player and not the character. In America, you're fighting the character because we have the issue of being far from each other. This has been mitigated somewhat by online play but it's still an issue because of lag. That's also the reason why some of our fights are waaaaaaaay more dynamic and fun to watch than a typical asian tournament fight in my opinion (Evo finals come to mind - tons of backdashing and safe pokes).
Anywho, that's my thoughts after 15 years of competitive Tekken. If you have anything else you'd like to ask, please feel free to. ^^