The Opta Supercomputer has predicted that PSG have a 56% chance of retaining the trophy.
Arsenal are given a 44% probability of completing a famous double.
Across 10,000 match simulations, PSG were victorious within 90 minutes in 43.5% of scenarios, with Arsenal triumphing in 29.7% and the remaining 26.8% requiring extra-time and potentially a penalty shootout.
On Saturday, newly crowned Premier League champions Arsenal will feature in their first UEFA Champions League final for 20 years.
As for PSG they are attempting to become the first club other than Real Madrid to defend the trophy in the Champions League era (1992-93 onwards) – Los Blancos memorably won it three times in succession from 2015-16 to 2017-18.
Saturday’s showpiece, which takes place at the Puskás Aréna in Budapest, will be a battle between the holders and challengers with relatively little experience on the continental stage.
