You said they took a gamble. It wouldn't have been a gamble if they had only one tyre working for them. It was actually a gamble because both tyres were working but considering the track temprature, Honda choose to go with the hard option (instead of extra hard).
See the statement from Motomatters:
https://motomatters.com/analysis/2015/04/20/2015_argentina_motogp_post_race_round_up.html
and this is what Marc said after Qualifying:





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