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A warm welcome to the Community @Xpress. Regarding to your question, to provide you with the most useful information possible, your account has one dashboard that displays a comprehensive view of your activity.
When you have more than one tracker, Fitbit combine their data and present the totals. For example, if the Charge 2 counted 5,000 steps and the Blaze counted 10,000 steps, the total number of steps on your dashboard is 15,000. For more information about this you can take a look at our Can I use more than one Fitbit tracker with the same account? article.
Now if your total is not the one you are supposed to have, I recommend verifying that your both trackers are syncing, you can follow the instructions provided in the Having trouble syncing? post.
See you around. 
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