A company called Jersey Mike's that makes sandwiches is becoming very popular and growing quickly. People are liking their food more than other places, like Subway. They also talk about Shake Shack and Chipotle, which make different types of food, but they are doing well too. The story says it's important where the restaurants are located to be successful. A company called Placer.ai watches how many people go to these places and helps them do better. Read from source...

1. The title of the article is misleading and sensationalized. It implies that Subway has a rival that is enjoying a spike in popularity, while also mentioning Potbelly's stock performance. However, the article does not provide any evidence or data to support this claim. Moreover, it does not explain how these two topics are related or relevant to each other. A better title would be something like "Jersey Mike's Subs: The Fastest-Growing Franchise Dining Chain?"
2. The article relies heavily on third-party sources and anecdotal evidence, rather than presenting original research or data analysis. For example, it cites Placer.ai, a business location analytics company, without providing any details about their methodology or credentials. It also mentions Shake Shack and Chipotle Mexican Grill's shares gaining on recent results, but does not specify what those results are or how they relate to Jersey Mike's performance. A more credible source would be a reputable market research firm, such as NPD Group or Technomic.
3. The article uses vague and subjective terms, such as "popular" and "success", without defining them or providing any criteria for measurement. For instance, it states that the sub is a popular food item across the U.S., but does not provide any statistics or data to back up this claim. It also implies that location plays a large role in the success or failure of restaurant chains, but does not explain how or why this is the case. A more objective and precise language would be to use terms like "market share", "sales growth", or "customer satisfaction".
4. The article contains several grammatical and spelling errors, such as missing punctuation marks, incorrect word usage, and inconsistent capitalization. For example, it writes "Shake Shack and Chipotle Mexican Grill Shares have gained on recent results" instead of "Shake Shack and Chipotle Mexican Grill's shares". It also writes "witness the massive scale of , one of the world’s largest restaurant operators" instead of "witness the massive scale of Subway, one of the world's largest restaurant operators." A professional and well-written article should have minimal errors and follow the standard rules of grammar and spelling.