I have two autoflowers and two photoperiod (same strain strawberry cough sativa’s) all started on the same day. Two are significantly taller than the other two? Anyone know which is which??? I’m assuming the autos are the taller ones. 
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Any pictures? And when exactly was they started?
Do u have pics and you should have tags to say which is the autos and photos , i always tag mine so i know whats whats
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Welcome to the community. You will know which is which when the autos start flowering without flipping the light schedule. Happy Growing!
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I would say the larger two are the photo period they tend to grow quicker I do believe
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I’d say photos are taller ones but just my experience with autos
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Ditto as the 2 
You’ll definitely know around week 4 above ground. The autos will start flowering 
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