The downgrade to Sector Perform suggests a neutral outlook on Enerplus's stock performance in the short term, indicating that the stock might perform in line with the sector. However, the increase in the price target from $21 to $22 signals a positive view on the company's valuation, potentially offsetting the impact of the downgrade. The mixed nature of this update (a downgrade with a higher price target) may lead to varied interpretations by investors, thus the neutral score.