in todays sections the 2 stroke is king. the 2 stroke is quicker of the bottom, revs higher and cleaner and is simply all together a more user frindly machine. there are however rumours that the 4t offers more grip than the 2 stroke option. well this is just a rumour!!! trust me ive seen one last week in competetion and it had no advantage. i think the reason is people hear a four stroke and it does admitadly sound soft on the bottom end however there is no where near as much feal and if you shut the 4 strokes down on the bottom end they will have a good go at throwing you over the bars due to the engine breaking.
another reason why 2 strokes are gonna live forever is the cost factor already discussed. but one thing that hasnt been mentioned is that the first time honda had the little japaneise riding one at twin ring motegi (japan) they actually carried a laptop aroud with them to program the egnition to respond correctly in each section.
well ok not every rider needs ultimate performance like them boys but still if they have to use egnition programing equipment to make the four strokes as good as the 2 strokes then why not just stick with the 2 strokes.
why try and make the 4 strokes something that they arent, when we all have perfectly good 2 strokes in our sheds.