[{quoted}](name=Valkyrie Witch,realm=NA,application-id=3ErqAdtq,discussion-id=GbepPxLo,comment-id=000000000000,timestamp=2015-02-26T18:22:44.442+0000)
I would argue that proper ward placement contributes far more to winning matches than TF/Noc Ults in those matches. Both TF and Nocturne almost always use their Ults offensively to get a kill for themselves, rather than simply using it to assist a fight they aren't going to show up for.
I'm not arguing that giving them an assist for it is in any way bad, but if they did, the abilities would start being used far more often for simple utility and would probably be balanced around that in the future.
Ward contribution does help a lot I just have mixed views on it as it changes how much gold is actually distributed across members of the team and how giving assists to people who just lay down wards could be very misinterpreting in the lobby. Player X lays down wards and does his own thing all game but has loads of assists due to his ward placements. Player X never actively engages with any of his members for assists. Post game lobby people want him reported for failure to cooperate, lack of communication but it looks as if he participated.
Now in the nocturne and tf situation it directly effects the enemies because they know they are being watched or lost vision and they know at any given moment they can be engaged on. There is too many uses to compare nocturne and tf to player X more than likely they would always be participating and finding opportunities to assist their team. But on occasion there are those rare circumstances nocturne or tf ult but didn't go in but it ultimately led to a kill for which they should be rewarded. Especially in tf's case where he ultimates in and unfortunately the target gets away due to the cast time but he created a zone or cut off an escape route for the enemy but never had direct contact to get his assist but directly led to your team catching the enemy. That is assist worthy. That's one of many situations where assists should be warranted but also because it gives the enemy team a different play style knowing tf or nocturne could come in while their ults are up. Tf / nocturnes bot lanes, top lanes could trade better and get a kill due to this.