For a penalty try the ref needs to be beyond any doubt that a try would have been scored had the infringement not taken place. The fact that Makinson (who was a square marker I think) was also involved in the tackle makes it hard to give a penalty try. Fwiw I think he would have strolled in, but Makinson was close enough to put a challenge in, so no try was the right call imo.

The updated rule for 2016 doesn't recognize players onside or offside it is purely down to whether the player would of scored or not.

To be honest I thought saints got away with a lot at the play the ball constantly holding our players down but was never called yet Tomkins couldn't get out the way and the penalty was given to the Saints. Could of been a even more embarrassing score line for them. Lets just hope we can kick on and finish as high up the table as possible

He wasn't in the act of touching down so this doesn't apply. Makinson wasn't committing any offence by tackling Lui therefore no guarantee that he would have scored. Fwiw i think he would have.

You are quoting 8 point try rules. That is different to a penalty try.