It is indeed EASY to figure out after the demo showed us events from stage 6 already. If it was the case that only Stage 1 & 2 events had been shown off to us from both Driving School and Challenges, that'd be a different story. And ever since the delay last year, I had been hoping this game was going to have significant content added in regards to SP but was being realistic about it, and it mostly turned out exactly how I was saying it would be.It's easy to figure out? None of us had figured out that the missions category would feature the long races that the demo showed us, especially not you.
You have for a long time harped on and on in countless posts about the campaign being barebones without any evidence of what exactly the events would be other than that we knew they would fit into 3 general categories. It's no surprise that you are now clinging on to the hope that it will not take a substantial amount of time to complete, even though if you played and golded the very limited campaign content of the demo you'd know that it will. That is easy to figure out just by adding up the sheer number of events that we didn't have access to in all 3 categories.
I have been long holding the view that what they'd displayed in regards to campaign structure is not going to change (especially since they were sticking to saying similar things with every update they provided us either via events or new info on the official website). They did showcase examples of what certain missions would entail in the past, I wasn't expecting them realistically to all of a sudden have a full career out of nowhere (like some were insisting could be the case).
I did often refer to the slides they showed off that displayed what certain events/missions were about in the categories, and guess what? Most of the events that were in the demo actually did fall in line with those. The only true surprise was the endurance race at the end. And with that in mind, as I said, even in the best case scenario, that every single event in stage 7 & 8 in challenge turned out to be a tournament, it would not be equal to a past GT game. (but I personally think it'll follow the general pattern for stage 7 & 8. one off races for each mission with a special event as the last one in the row)
And yes I did gold the vast majority of the events in the demo, and those took the same amount of time similar events in past GT games took me. The challenge han't changed, and it stands to reason that if the previous game featured many more events than this one, the older games would take that much longer to complete.