Is this supposed to mean something?
You've made no point at all except how you ignore that these are the same event from different viewpoints of focus.
Let's look at how each talks to the event:
Matthew 24:1, 2:
Jesus came out from the temple and was going away when His disciples came up to point out the temple buildings to Him.
2 And He said to them,Do you not see all these things? Truly I say to you, not one stone here will be left upon another, which will not be torn down.
Luke 21:5, 6:
5 And while some were talking about the temple, that it was adorned with beautiful stones and votive gifts, He said,
6 As for these things which you are looking at, the days will come in which there will not be left one stone upon another which will not be torn down.
Mark 13:1, 2:
As He was going out of the temple, one of His disciples *said to Him, Teacher, behold what wonderful stones and what wonderful buildings!
2 And Jesus said to him, Do you see these great buildings? Not one stone will be left upon another which will not be torn down
This is why you have no point...it doesn't take rocket science to understand this is the same event.
What you have is each writer laying out the same thing from their viewpoint...that's all.
How do we know...because the same question is asked by the disciples:
Mathhew 24:3:
3 As He was sitting on the Mount of Olives, the disciples came to Him privately, saying, Tell us, when will these things happen, and what will be the sign of Your coming, and of the end of the age?
Luke 21:7:
7 They questioned Him, saying, Teacher, when therefore will these things happen? And what will be the sign when these things are about to take place?
Mark 13: 3, 4:
3 As He was sitting on the Mount of Olives opposite the temple, Peter and James and John and Andrew were questioning Him privately,
4Tell us, when will these things be, and what will be the sign when all these things are going to be fulfilled?
Doesn't take much to figure this out.
It's description of the same event...Mark gives the fewest details, Matthew gives the most detail, and Luke is in the middle.
You make no point at all. You just think you did.
Also, let me dd that Luke was not there, he's reporting what what was told to him. He tells you that when he opens his gospel in Luke 1, 2:
Inasmuch as many have undertaken to compile an account of the things accomplished among us,
2 just as they were handed down to us by those who from the beginning were eyewitnesses and servants of the word,
Luke is basically a reporter. Matthew and Mark were there. that's why they sound almost the same.
Do your research!