Mnnorthstar's argument is about as good as I can find. They both sailed in Operation Vado and that was pretty much their war career before being scuttled in Toulon.
"At the beginning of the war she was in Toulon. In December she sailed with Tourville for Bizerte, Tunisia. On 8 December after forming the Second Cruiser Division both ships sailed to monitor shipping as far east as Beirut. She returned to Bizerte on 28 December.[12] In January 1940 she joined Force Y arriving at Dakar on 30 January to replace Force X. The first sortie was from 18 to 28 February. She was due to participate in the second sortie from 6 to 18 March, but was sent on 7 March to reinforce Force X consisting of the battleship Bretagne and cruiser Algérie escorting gold to Canada. She returned to Dakar when completed. Force Y left Dakar on 11 April 1940 and returned to Toulon.[13]
On the night of 13/14 June she participated in Operation Vado, the bombardment of Genoa and Vado, Italy by the Third Squadron. The Vado Group included the cruisers Foch and Algérie and the Genoa Group included the cruisers Dupleix and Colbert. The bombardment cause little damage as Group Genoa fired at the wrong target and half of Group Vado shells fell into the sea."
Colbert escorted bretagne to canada and sttasbourg back to france after op-catapult
Suffren has excellent spotting Dupliex has flag 1 and raider hunter
Shore bombardment is niche we can utilizevfor both