Not that it is a terribly important matter but I wish to clarify what I meant in my last comment.
Daniel and it's companion text 1 Macc (5:54) describe Antiochus' setting up an idol in the Temple. This triggers a successful rebellion under the Maccabees. The idol is removed.
While Caligula intended to do the same his order is resisted by the Jews and delayed by Petronius, Caligula's death ends the matter. (Some have suggested this is the source of the 2 Thess Man of Lawlessness, which may be a snippet of confused Pauline material included in 2 Thess).
After another rebellion, 66-70 sees the destruction of much of the city including the Temple, Jews are banished from the city until 118CE.
Then around 130CE:
” At Jerusalem Hadrian founded a city in place of the one which had been razed to the ground, naming it Aelia Capitolina, and on the site of the temple of the god he raised a new temple to Jupiter. This brought on a war of no slight importance nor of brief duration, for the Jews deemed it intolerable that foreign races should be settled in their city and foreign religious rites planted there.”
– Cassius Dio, Roman History, 69.12.
Note, this again triggers a revolt. The Bar Kokhba revolt is successful and begins the reestablishment of an independent Jewish state for about 3 years. Temple rebuilding was started during this time. Simon bar Koseva the leader of the revolt was given the title Kokhba (star) as he was hailed the Messiah by prominent religious leaders including Rabbi Akiva. Coins were minted with a picture of an imagined rebuilt Temple with a star above.
The parallel to the Maccabean revolt is hard to miss. The triggers in both cases was the placement of foreign idols on the Temple mount. The rebellion/war creates the 'great tribulation'.
When the writer of the Markan version explicitly says, 'let the reader use discernment' he is indicating parallels with the past.
Those that insist the 'abomination' refers to Roman army standards on the Temple mount after the conquering of Jerusalem in 70CE, must ask how after the destruction would it make sense to flee? It makes sense narratively to suggest the A of D was a prelude to the horrors needing to be escaped.
Also, the political situation of the years between 70 and 135, where empire wide Jewish rebellion and war called the 2nd Revolt, fits the "wars and rumors of wars' descriptor better. A prominent earthquake in 114 as well as the beginning of organized State oppression of Christians etc. best describe events well after 70CE.
This naturally complicates a simple reconstruction of Synoptic order. It might suggest as Hermann Detering suggests Luke preserves an older form by not including the Ab. of Des. phrase but only a reference to Roman armies. Then again, the author may have had his own reasons for amending what he saw in Matt and Mark
Is Mark 13 an abridgement of Matt 24 and an addition to the original Markan text? Maybe, some think so.
In the end, the basic hypothesis of Markan priority holds, with recognition that there were harmonization efforts for centuries. Some of these may be as large as the majority of Mark 13.
In the end we have to leave open the possibility that Mark, in essentially final form, may date later than most reference works suppose.