From my research these times are conservative. The car has proven faster times. For example 5.4 secs 0-60, 13.8 in the 1/4 mile. Fully stock without any extra weight removed such as spare tire.
I suspect the rarity of cvt transmissions in sporty cars is the culprit as experienced drivers will need to get used to the differences.
5.7 0-60, 14.2 in the 1/4 mile is a more likely number.