1. Integration Ease: MercadoPago offers a simple integration process with its APIs and SDKs, making it easier for developers to implement payment solutions into websites or mobile apps. On the other hand, PagSeguro may have a more complex integration process that requires additional configuration steps, potentially causing delays in setting up payment systems.

2. Payment Methods: MercadoPago supports a wide range of payment methods, including credit cards, debit cards, and even cash payments at convenience stores. In contrast, PagSeguro may have fewer payment options available, which could limit the flexibility for customers to make transactions using their preferred payment method.

3. Transaction Fees Structure: MercadoPago usually has a transparent fee structure, where merchants can easily understand the costs associated with each transaction. PagSeguro, on the other hand, may have complex fee policies with additional charges or unclear pricing models, which can make it challenging for businesses to predict their total expenses related to payment processing.

4. Customer Support: MercadoPago typically offers reliable customer support through various channels such as live chat, email, and phone support to assist merchants and customers with any payment-related issues. In comparison, PagSeguro may have limited customer support options or slower response times, which could lead to prolonged resolution times for potential problems.

5. Geographic Availability: MercadoPago caters to a broader market by providing services in multiple countries across Latin America, while PagSeguro may have a more localized presence within Brazil. This broader geographic availability of MercadoPago can be advantageous for businesses looking to expand their operations into various countries and regions.

6. Additional Services: MercadoPago may offer additional services such as recurring billing, split payments, and customized checkout experiences to cater to specific business needs. In contrast, PagSeguro may have limited advanced features or customization options, which could restrict businesses in optimizing their payment processes for better user experience.

In Summary, MercadoPago and PagSeguro differ in integration ease, payment methods, transaction fees structure, customer support, geographic availability, and additional services offered to merchants and customers.