How to compare stocks ?To look at the shareprice movements on its own as an evaluation of value to ignorant (don't be offended it just means not knowing any better).
Take the companies you are considering and compare their book values, their price to sales ratios, earnings ratios and any other fundamental that you like. Try to be sure the companies are very similar in nature or the exercise is not of value.
Consider the products/services offered, be sure that you are bullish / optimistic in these offerings growing in popularity in the future therefore sales revenue growing.
The stockmarket is not free money, it's a lot of work, it's a great deal of patience and it will test you beyond what you think is possible at times.
IMHO the cannabis sector has every potential for great returns however, as noted, the schedule for this is going to be set by the market. You need patience.
Best Regards
Q