Strategic Planning in Sports Apparel?

[In each week’s DQ#2, we will examine a case from our textbook and available resources, and discuss some pertinent questions that will support our skill development in the use of strategic planning instruction from the current week. These DQ#2’s do not require citations and references; they are intended to engage your critical thinking and assess your synthesis of key topics for the week.]
This forum will examine the apparel company Under Armour. To give you a brief look at the company from a consumer perspective, here are a couple commercials to help get you acquainted with their “shtick.” There is also a McKinsey video that discusses “Sources of Growth,” to give you some insights about how to approach your initial answer to this forum:
Under Armour Commercial #1: https://www(dot)youtube(dot)com/watch?v=jQFhSY0mt9Q
Under Armour Commercial #2: https://www(dot)youtube(dot)com/watch?v=SNNsBUzOsMs
McKinsey Report: http://www(dot)mckinseyquarterly(dot)com/A_fine-grained_view_of_the_sources_of_growth_2227
Go to our course textbook (Thompson, Peteraf, Gamble & Strickland, 2014), Part 2, Case 5, and read the case regarding Under Armour (C-42 – C-58). From the case, answer the following questions, being as specific as possible:
1. Which of the five competitive forces is strongest and why?
2. Who are Under Armour's top three competitors to watch in the sports apparel industry? Why?
3. What are the differences between the competitors' strategies—Under Armour, Nike, The Adidas Group? Which company has the better strategy? Why?
4. Using the financial data provided in the case study, which of the three rivals has been the best performer?
5. What can Under Armour learn from its competitors? 
Finally, based on your assessment, what can you apply to organizational work in your sector from what you in the Under Armour case?
[No citations/references required; write in the third person; this forum is designed to contribute to skill development]